At the beginning of this year, the Ministry of Ecology and Environment released a revised national ecological environment standard with the title “Technical Requirements and Detection Methods of Continuous Automatic Monitoring System for Ambient Air Particulate Matter (PM10 and PM2.5)”. This new HJ 653-2021 regulation, better known as HJ 653 Technical Requirements, is a game-changer. It is designed to help further reduce the concentration of ambient particulate matter by supporting light scattering monitoring technology. In order to better serve the Chinese market, Palas® established a subsidiary in China in July 2020. From the beginning of its establishment, it has been preparing for the applicability test of Single Particle Aerosol Distribution Spectrometers (SPADS) in various cities of China. Since Palas China starts, we make “circle tests” across China (incl. Beijing, Shenzhen, Shanghai, Tianjin, Jiangsu, Hebei, Shandong, Sichuan, etc.) to collect data and upgrade accordingly algorithm for China only. HJ 653 is the highest & most strict regulation worldwide based in our understanding and a real challenge which Palas is doing great for it.
The Light scattering Monitoring Technology in focus
The new HJ 653 Technical Requirements brings changes based on two key aspects:
· Stricter specifications
Slope and intercept are tightened for comparison between gravimetric and continuous monitoring instruments;
· Opening to new technologies
Limitation to technology (i.e. Beta and TEOM) was lifted. That means, end users have options to benefit from the advanced light scattering technology.
Users could get benefit from the innovation and maturity of light scattering monitoring technology with significant cost advantages. In the European and American markets, light scattering monitoring instruments are on the rise. The HJ 653 Technical Requirements embracing this monitoring technology trend, will support technological innovation and enables more options to choose from.
Complete Installations at the test sites in Shanghai and Sichuan
Light scattering Monitoring Technology Expert – Palas®
Palas® team has used the Single Particle Aerosol Distribution Spectrometers, Fidas® series in Beijing, Shenzhen, and Jiangsu to conduct tests. So far, all measurement data in Beijing show that the testing result of PM2.5 have a high correlation with that using manual gravimetrical measurement methods. The data tested in Shenzhen also concluded the parallelism of PM10 and PM2.5 was about 3%. It was found at a test point in Jiangsu that the degree of matching between PM10 and β-ray automatic monitoring equipment was high.
PM10 monitoring results obtained by Fidas® 200 Smart according to HJ653-2021
Palas® Fidas® uses light scattering monitoring technology to monitor airborne particulate matter, providing end users with a more reliable, economical and informative option. Assist in the monitoring and traceability of fine particulate matter.
Some test data display:
PM2.5：Comparison result between Fidas 200 smart and gravimetric method, slope 0.9969, intercept -0.2942, R=0.999
Accurate and stable light scattering measuring instrument. Fidas 200 system product advantages:
· Obtained TÜV Rheinland certification;
· One is worth five: PM1, PM2.5, PM10, TSP, particle size distribution information; One of the instruments measures PM2.5 and PM10 at the same time, effectively avoiding data inversion;
· Particle size distribution information down to 180nm (180nm-18um). Covering traffic pollution emissions from aerosols to dust particles, and providing particle size information for traceability;
· High time resolution: 1-second interval, suitable for navigation monitoring;
· Low maintenance, low consumption, high data availability: Basically no consumables, 99% per year
· Accurate data: lower extended measurement uncertainty compared to other devices, very good inter-instrument correlation
Data Validation Light scattering Monitoring Efficiency
Palas® Fidas® is based on the patented single particle counting aerosol particle size distribution spectrometer principle. It is a leader in the light scattering，monitoring instrument for particulate matter, and a leading brand in the European market. The applicability test of Fidas® series in China keeps moving. In order to better understand the situation in various places, and to better optimization algorithm and parameters. The tests will also be extended to typical places, such as Hebei and Shandong. Through these tests, Palas®’s instrument applicability can be optimized, and better experience can be provided to the customers. Palas® looks forward to cooperating with more partners and owners to jointly serve the market demand for particle monitoring!
Fidas® Series Single Particle Aerosol Distribution Spectrometers
Applications
· Regulatory pollution control in monitoring networks
· Long-term studies of particles
· Mobile navigation monitoring
· Emission dispersion studies
Want more product information? You are cordially invited to the Palas® Webinar – New HJ653 and Proving Reliability in China for Palas’ SPADS technology.
Topic： New HJ653 and Proving Reliability in China for Palas’ SPADS technology
Time：16 December 2022, Friday 15: 00 – 16: 00
Presenter: Ms. Deng Jun
Palas® Business Development Manager—Environmental & Automotive
You are welcome to register for the conference!
Register online now to participate in our webinars if interested